Masterclock
GMR
User
Manual
v2
–
2016.12
60
clockQuality.offsetScaledLogVariance
–
precalculated
value
set
at
factory,
200
ns
The
following
can
be
modified:
twoStepFlag
–
if
true,
two
step
is
enabled,
if
false,
one
step
is
used.
priority1
and
priority2
‐
Priority
is
one
of
several
parameters
used
to
determine
which
device
on
the
network
will
be
the
grandmaster.
The
lower
the
number,
the
higher
the
priority
with
priority
0
being
the
highest.
The
range
of
values
is
0
‐
255.
Priority
#1
is
used
early
in
the
grandmaster
selection
process.
Priority
#2
occurs
late
in
the
selection
process.
domain
number
‐
A
domain
consists
of
one
or
more
PTP
devices
communicating
with
each
other.
The
default
domain
for
PTP
devices
is
domain
“0”.
Multiple
domains
are
allowed
and
the
input
range
is
0
to
127.
All
devices
will
receive
all
PTP
packets
but
they
will
only
process
and
respond
to
packets
within
their
configured
domain
number.
slave
only
–
false,
this
device
can
become
the
grandmaster
(based
on
the
Best
Master
Clock
(BMC)
algorithm.
True,
this
device
can
only
be
a
slave.
2)
currentDS,
Current
Data
Set
No
members
can
be
modified.
Select
’x’
to
go
back
up
a
level,
‘?’
for
help
The
following
cannot
be
modified:
stepsRemoved
–
the
number
of
devices
between
this
device
and
the
master
starting
with
the
value
of
1
(this
device).
offsetFromMaster
–
calculated
time
difference
between
this
device
and
the
master.
meanPathDelay
–
calculation
of
the
network
path
delay
between
this
device
and
the
master
3)
parentDS,
Parent
Data
Set
No
members
can
be
modified.
Select
’x’
to
go
back
up
a
level,
‘?’
for
help
The
following
cannot
be
modified:
parentPortIdentity
–
identity
of
the
current
parent
parentStats
–
not
used
observedParentOffsetScaledLogVariance
–
not
used
observedParentClockPhaseChangeRate
–
not
used
grandmasterIdentity
–
identity
of
the
current
grandmaster
grandmasterClockQuality
‐
For
GMR
products,
see
previous
definition
in
the
default
data
set.
Non
‐
GMR
products
may
have
additional
values.
grandmasterPriority1
and
grandmasterPriority2
–
see
previous
definition
in
the
default
data
set.
4)
timepropertiesDS,
Time
Properties
Data
Set
Select
which
member
to
modify
(1
‐
4),
’x’
to
go
back
up
a
level,
‘?’
for
help
The
following
cannot
be
modified:
timeTraceable
–
true,
the
current
time
is
traceable.
False,
the
current
time
is
not
traceable.
frequencyTraceable
–
true,
the
current
frequency
is
traceable.
False,
the
current
frequency
is
not
traceable.